Jacoby, Harold, 1865-1932 · New York, The Macmillan company · leaf 379
METEORS AND AEROLITES out all along their orbit, so that we meet some of them when- ever we strike the orbit. But the Leonids must be concen- trated in a certain region in their orbit : this region comes around to the point of intersection in the proper way only once in 33 years. A very interesting… … 30°Wesiof+heSun directed towards the Meteors at Sunrise and Sunset. Fig. 93. point P, 90° west of S, where the sun appears on the ecliptic. The earth's orbital motion takes place in the direction of the curved arrow, so that at six in the morning we are on the front of the earth in respect to its…
Astronomy
Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.
